Demountable rotor



Aug. 21, 1945. I R.W. FERRIS 2,383,119

DEMQUNTABLE ROTOR Filed April 4, 1944 2 Sheets-Sheet l Inventor a Attorneys Thee/s,

Aug. 2 1, 1945. R. w. FERRIS i 2,383,119

DEMOUNTABLE ROTOR Filed A iil 4, 1944 2 Sheets-Sheet 2 nventor for "W. Ree/s,

mlflawyvm atented Aug. 21, 1945 DEMOUNTABLE no'ron I Roy W. Ferris, Muskegon Heights, Mich.

Application April 4, 1944, Serial No. 529,522

(Cl. 287-53) I 3 Claims.

This invention relates to new and useful improvements in wheel fastening means for vehicles and machinery and more particularly to a demountable wheel which can be quickly applied to and removed from a wheel hub and/or to a demountable pulley or gear which can be quickly applied to and removed from a shaft on any machine.

An important object of the presentinvention is to provide a fastening mechanism. for de-' mountable wheels, pulleys, gears or similarobjects of propulsion which will eliminatethe cus-. tomary use of nuts and bolts and provides latch members which operate in unison and in a. positive acting and substantially fool-proof manner.

Other objects and advantages of the invention will become apparent to the reader of the following description.

In the drawings; 3

Figure 1 represents a fragmentary exploded side elevational view showing the drum and sleeve assembly.

Figure 2 is a longitudinal sectional view of the assembled structure.

Figure 3 is a cross section on the line 3-3 of Figure 2.

Figure 4 is a cross sectional view on the line 4-4 of Figure 2.

Figure 5 is a perspective view latch members.

Figure 6 is an end elevational view of the unlocking. tool.

of one of the Referring to the drawings wherein like numerals refer to like parts, it can be seen that numeral 5 denotes a drum secured to a. wheel axle or the like 6 in any suitable manner.

This drum has bayonet slots consisting in inwardly disposed slots 1 formed with laterally disposed extensions 8 at their inner ends.

As can be seen in Figure 4, between a plate 9 and the back wall I of thedrum radially disposed slideways II are located and serve to slidably receive latch members I2having oppositely disposed lugs I3 and I4 at their outer ends. Interposed between the inner side of each lug I3 and the inner endof the corresponding slideway II is a coiled compression spring I5, serving to urge the corresponding latch member outwardly and into the inner end of the. corresponding slot 1,. as shown in Figures 1 and 4.

A sleeve upon which a wheel or belt (not shown) may be mounted is denoted by numeral I6 and the inside of this sleeve has a plurality of circumferentially spaced studs H which are adapted to slide in the slot 1 and the slot exand inner i tensions 8 when the sleeve I6 is applied over the drum 5 and rotated. The application of the sleeve is accomplished by applying the sleeve I6 to full depth over the drum 5 and then rotating the sleeve I6 so that drum 5 and sleeve I6 lock automatically. The automatic locking is efiected by rotating the sleeve !6 to move the studs II. over and past the lugs I3 of the latch members I2 into a position between said lugs l3 and the outer ends of the slot extensions 8. In this operation, the studs I1 wipe over said lugs I3, the latch members I2 moving inwardly in opposition to the springs I5. When the studs I! are properly positioned in the lateral slot extensions 8, the latch members I2 move outwardly so that the lugs I3 obstruct the slots 1 to prevent return of the studs I1, and thus the wheel or sleeve cannot become displaced from the drum5 until the tool I8 is used.

Thetool I8 consists of a cylindrical body I9 preferably having a bore 20 therethrough and through a short reduced neck 2|. A transverse opening is formed in the neck 2| to accommodate a hand bar 22. The inner end of the body I9 is hollowed out to define an apron 23 which has its inner faces formed with cam surfaces 24 adapted to ride the lugs I4 at the inner end of the latch members I2. Obviously, by rotating the tool I8, the latch members I2 are contracted, drawing the lugs I3 well into the slideways II, so that the sleeve. I6 can be rotated and disengaged by rotating sleeve I6 in the opposite direction from that used in locking, until the studs I! can move out of slot extension 8 into slot I and then when the sleeve I6 is pulled off from drum 5 the studs II slide back along slots 1 until the sleeve is disengaged from the drum. 3

terials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

3 Having described the invention, what is claimed as new is:

1. A demountable rotor comprising a hub forming drum having peripheral bayonet slots therein provided with outer ends opening onto one edge of the drum, a sleeve fitting over the drum, internal lugs on said sleevefitting in the inner ends of said slots, and radial latches in said drum, spring pressed into said slots between said lugs and said outer ends of the slots, said latches being slidable to retract the same out of the slots.

2. A demountable rotor comprising a. hub forming drum having peripheral bayonet slots therein provided with outer ends opening onto one edge of the drum, a sleeve fitting over the drum, internal lugs on said sleeve fitting in the inner ends of said slots, and radial latches in said drum, spring pressed into said slots between said lugs and said outer ends of the slots, said latches being slidable to retract the same out of the slots, said drum having an annular plate therein forming with one side of the drum slideways for said latches.

3. A demountable rotor comprising a hub forming drum having peripheral bayonet slotstherein provided with outer ends opening onto one edge of the drum, a sleeve fitting over the drum, internal lugs on said sleeve fitting in the inner ends of said slots, and radial latches in said drum, spring pressed into said slots between said lugs and said outer ends of the slots, said latches being slidable to retract the same out of the slots, said drum having an annular plate therein forming with one side of the drum slidewaysfor said latches, said latches having inner right angledends extending out of said plate and for use in retracting the latches.

ROY W. FERRIS. 

